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(No Model.)

A. T. DAWSON. 'MOUNTING Non DISAPPBARING GUNS.

No. 605,459. Patented Jun 7,1898.

UNITED STATES PATENT OEEicE.a

ARTHUR T. DAWSON, OF SIIEFFIELD, ENGLAND.

MOUNTING FOR DlSAPPARING GUNS.`

SPECIFICATION forming part of Letters Patent No. 605,459, dated June 7, 1898.

Application filed February 19, 1898. Serial No. 670,947. (No model.)

To all whom zJ': 77mg concern,.-

Be it known that I, ARTHUR TREvoR DAW- SON, a citizen of England, residing at Oak Park, Shellield, in the county of York, England, have invented certain new and useful ,Improvements in lllountings for Disappearing Guns, of which the following is a specilication.

This invention relates to the mounting of a disappearing gun, which is constructed and operates as will be described with reference to the accompanying drawings.

Figure l is a side view, and Fig. 2 is a rear view, of a mounting according to this invention.

The trunnions T are journaled in bearings at the upper ends of two levers A, ixed on a rocking shaft B, which is mounted in bearings on the sides of the carriage' C. The lower arms of the levers A have eyes tted on the endsof a cross-shaft D, to which is linked the plunger of a recoil-cylinder E. On the crossshaft D are tted the eyes at the upper ends of a pair of levers F, the lower ends of which are jointed to a weight G. To the lever F, nearv their middles, are jointed the ends of a pair of radius-rods II, the other ends of which are pivoted on the rear part of the carriage. These radius-rods and the arms of the levers F are so proportioned as to constitute a substantially parallel motion', causing the weight G to travel in a nearly straight verticalline. To the gun at points some distance behind the trunni'ons are jointed the upper ends of a pair of elevator-rods K, the lower ends of which can be adj usted in various positions in slots L in the sides ot' the carriage.

The dotted lines in Fig. l show the position of the parts when the gun reeoils, these parts in their dotted position being marked by the letters T', A', D', F', G', II', and K. The recoil-cylinder E, of which there may be more than one, is provided with a suitable valve, so that the gun can be retained in its lowered position until the valve is opened. A pump may be applied to the cylinder, so as to lower the gun when it is not fired.

lVhen the gun is fired, the energy of the recoil is mostly taken up by the plunger of the recoil cylinder or cylinders, also partly by the weight G, which, as the gun swin gs backward and downward, is raised to its elevated posif tion G'. The parts are retained in their dotted positions until the plunger of the recoilcylinder is released, whereupon the weight G descends, raisingthe gun to the firing position. The elevation of the gun is determined by the adjustment of the lower ends of the rods K in the slots L.

I-Iaving thus described the nature of this invention and the best means I know for carrying the same into practical effect, I claim- In the mounting of a disappearing gun the combination of a pair of pivoted levers having bearings at their upper endsfor the trunnions, and jointed at their lower ends to the plunger of a recoil-cylinder and also to another pair of pivoted levers which carry a weight and are pivoted on a pair of radius-rods, said radius-rods being connected to the gun -carriage, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ARTHUR T. DAVSON.

Witnesses:

FRED C. HARRIS, JNO. P. M. MILLARD. 

